That statement is true.
To be precise, the united states coined both gold and silver in 1873. Before this, gold is the only material that is used to create coin money.
But the cost of production to produce gold coin is really high. Because of this, the government decided to include silver in order to drive the cost of production down in 1973.
They were the best Ship Builders and best Sailors of Mesopotamia. They made the first see through glass.
Afghanistan, when looked at a map, can be found at <em><u>1</u></em><em><u /></em>, next to Pakistan (4) and Iran (3) and below Uzbekistan (2).
:)
Answer:
Well based on the fact that the very first patented rock crushing machine was made in the year 1830, and the first successful, Eli Whitney Blake's, was in 1858, I'd say the development process was around 30 years.
